Handmade item: Shoulder strap cushion for water bottles. Price is for one item. ① ② ③ ④ Please choose one from the above. No comment, immediate purchase OK. After purchase, please let me know your desired number. Can be used for straps that detach from water bottles. Also suitable for slightly thicker shoulder straps such as those on calligraphy bags and paint bags. Size: 5.5 x 20cm (Opening: 4.5cm) Made with two layers of quilting for emphasis on thickness! Provides good cushioning. Reduces the burden on your child's shoulders. Each item is made with care, but as it is a handmade item, there may be some distortion or misalignment. Thank you for your understanding.